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// Copyright 2017 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <utility>
#include "dawn/webgpu_cpp.h"
#include "gtest/gtest.h"
class Object : public wgpu::ObjectBase<Object, int*> {
public:
using ObjectBase::ObjectBase;
using ObjectBase::operator=;
static void WGPUReference(int* handle) {
ASSERT_LE(0, *handle);
*handle += 1;
}
static void WGPURelease(int* handle) {
ASSERT_LT(0, *handle);
*handle -= 1;
}
};
// Test that creating an C++ object from a C object takes a ref.
// Also test that the C++ object destructor removes a ref.
TEST(ObjectBase, CTypeConstructor) {
int refcount = 1;
{
Object obj(&refcount);
ASSERT_EQ(2, refcount);
}
ASSERT_EQ(1, refcount);
}
// Test consuming a C object into a C++ object doesn't take a ref.
TEST(ObjectBase, AcquireConstruction) {
int refcount = 1;
{
Object object = Object::Acquire(&refcount);
ASSERT_EQ(1, refcount);
}
ASSERT_EQ(0, refcount);
}
// Test .Get().
TEST(ObjectBase, Get) {
int refcount = 1;
{
Object obj1(&refcount);
ASSERT_EQ(2, refcount);
ASSERT_EQ(&refcount, obj1.Get());
}
ASSERT_EQ(1, refcount);
}
// Test that MoveToCHandle consumes the C++ object into a C object and doesn't release
TEST(ObjectBase, MoveToCHandle) {
int refcount = 1;
{
Object obj(&refcount);
ASSERT_EQ(2, refcount);
ASSERT_EQ(&refcount, obj.MoveToCHandle());
ASSERT_EQ(nullptr, obj.Get());
ASSERT_EQ(2, refcount);
}
ASSERT_EQ(2, refcount);
}
// Test using C++ objects in conditions
TEST(ObjectBase, OperatorBool) {
int refcount = 1;
Object trueObj(&refcount);
Object falseObj;
if (falseObj || !trueObj) {
ASSERT_TRUE(false);
}
}
// Test the copy constructor of C++ objects
TEST(ObjectBase, CopyConstructor) {
int refcount = 1;
Object source(&refcount);
Object destination(source);
ASSERT_EQ(source.Get(), &refcount);
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(3, refcount);
destination = Object();
ASSERT_EQ(refcount, 2);
}
// Test the copy assignment of C++ objects
TEST(ObjectBase, CopyAssignment) {
int refcount = 1;
Object source(&refcount);
Object destination;
destination = source;
ASSERT_EQ(source.Get(), &refcount);
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(3, refcount);
destination = Object();
ASSERT_EQ(refcount, 2);
}
// Test the repeated copy assignment of C++ objects
TEST(ObjectBase, RepeatedCopyAssignment) {
int refcount = 1;
Object source(&refcount);
Object destination;
for (int i = 0; i < 10; i++) {
destination = source;
}
ASSERT_EQ(source.Get(), &refcount);
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(3, refcount);
destination = Object();
ASSERT_EQ(refcount, 2);
}
// Test the copy assignment of C++ objects onto themselves
TEST(ObjectBase, CopyAssignmentSelf) {
int refcount = 1;
Object obj(&refcount);
// Fool the compiler to avoid a -Wself-assign-overload
Object* objPtr = &obj;
obj = *objPtr;
ASSERT_EQ(obj.Get(), &refcount);
ASSERT_EQ(refcount, 2);
}
// Test the move constructor of C++ objects
TEST(ObjectBase, MoveConstructor) {
int refcount = 1;
Object source(&refcount);
Object destination(std::move(source));
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(2, refcount);
destination = Object();
ASSERT_EQ(refcount, 1);
}
// Test the move assignment of C++ objects
TEST(ObjectBase, MoveAssignment) {
int refcount = 1;
Object source(&refcount);
Object destination;
destination = std::move(source);
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(2, refcount);
destination = Object();
ASSERT_EQ(refcount, 1);
}
// Test the move assignment of C++ objects onto themselves
TEST(ObjectBase, MoveAssignmentSelf) {
int refcount = 1;
Object obj(&refcount);
// Fool the compiler to avoid a -Wself-move
Object* objPtr = &obj;
obj = std::move(*objPtr);
ASSERT_EQ(obj.Get(), &refcount);
ASSERT_EQ(refcount, 2);
}
// Test the constructor using nullptr
TEST(ObjectBase, NullptrConstructor) {
Object obj(nullptr);
ASSERT_EQ(obj.Get(), nullptr);
}
// Test assigning nullptr to the object
TEST(ObjectBase, AssignNullptr) {
int refcount = 1;
Object obj(&refcount);
ASSERT_EQ(refcount, 2);
obj = nullptr;
ASSERT_EQ(refcount, 1);
}